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Finding the Third Proportional to 276,316.50 and 439,385.50

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Solution

The third proportional to 276,316.50 and 439,385.50 is: 698,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,316.50 : 439,385.50 = 439,385.50 : x
  2. Step 2: Convert to fraction form
    276,316.50/439,385.50 = 439,385.50/x
  3. Step 3: Cross multiply
    276,316.50x = 439,385.50 × 439,385.50
  4. Step 4: Simplify right side
    276,316.50x = 193,059,617,610.25
  5. Step 5: Solve for x
    x = 193,059,617,610.25/276,316.50
  6. Step 6: Final answer
    x = 698,690.15

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.